Chain door fastener

Abstract

A conventional chain door fastener is provided with an additional second stage lock arrangement for maintaining the chain fixed taut between the trim plate member on the door jamb and the door plate member on the door. Preferably, the arrangement includes a slide member adapted to be removably secured on the slideway of the door plate member.

The inventor claims: 
     
       1. A door chain latch comprising: a. first and second plate members to be mounted on a door and the jamb portion of the door frame, respectively;   b. a latch chain;   c. means fixedly securing one end of said chain to one of said plate members;   d. means releasibly securing the other end of said chain to the other plate member comprising a stud on said chain and a slideway in said other plate member for removably slidably receiving said stud; and   e. hook means having a portion removably slidably engageable in said slideway before said stud and having a hook portion insertable through a selected intermediate link of said chain.   
     
     
       2. The latch of claim 1 in which said one plate member is a trim plate for mounting on said door frame jamb portion, said other of said plate member is a door plate for mounting on said door, and said one chain end is secured to said trim plate.